3inch front 2 inch rear lift using spacers in front and add a leaf in rear

Running 285 70 R 17's on my setup they are running great. Question is what are you all running your pressure at?

The tire side wall calls for 65psi cold and that just seems way to heavy. They are load the range D tires

I originally had them at 45 leaving the tire shop and noticed a slight searching of the tire(a little more vibration than normal). Bumped em up to 60 where they are at now and they seem great it eliminated that issue but seems very stiff. My thought is to try 55 or 52 psi and find the sweet spot